單項(xiàng)選擇題Which of the listed pre-start procedures should be carried out prior to starting a crosshead type diesel engine after an overhaul?()

A.Pre-lube cylinders with hand cranks
B.Open all air space drain cocks
C.Open all indicator valves
D.All of the above


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1.單項(xiàng)選擇題Late fuel injection in a diesel engine is indicated by low firing pressure with ()

A.low exhaust temperature
B.low exhaust pressure
C.mechanical knock in each cylinder
D.black or gray exhaust smoke

2.單項(xiàng)選擇題The bore of a diesel engine cylinder describes the ()

A.swept volume of the cylinder
B.inside diameter of the cylinder
C.piston displacement in the cylinder
D.length of the piston stroke

4.單項(xiàng)選擇題Compared to a naturally aspirated diesel engine, a supercharged diesel engine has()

A.a cylinder air charge of higher pressure
B.increased pumping losses
C.less valve overlap
D.reduced blow-by

5.單項(xiàng)選擇題Late fuel injection occurring at, or after TDC in a diesel engine is indicated by excessive exhaust smoke and ()

A.low exhaust temperature
B.low firing pressure
C.fuel knock in each cylinder
D.mechanical knock in each cylinder

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As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()

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When does auxiliary burner of incinerator put into operation? ()Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish

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The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated()

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()connectors hold best if a wire is accidentally pulled or a connection becomes loose.

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Which one is NOT the ‘clear grounds’ for a more detailed inspection?()

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One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()

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Using a file without a handle may result in ()

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